1995/08/21 by Matthew J. Reilly, A. G. Rojo · 1 citation
Physics and Astronomy · #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat
paper · pdf · doi:10.1103/physrevb.53.6429
14 pages (revtex format), 8 postscript figures
arxiv created 1995/08/21 · openalex publication_date 1996/03/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We consider a model of Raman scattering for a two-dimensional S=1/2 Heisenberg antiferromagnet which includes a dynamical spin-phonon interaction. We observe a broadening of the line shape due to increased coupling with excited high-energy spin states. Our results are close to a model of random, static exchange interactions, introduced in this context by Haas et al. [J. Appl. Phys. 75, 6340 (1994)], which, when extended to large numbers of spins, explains experiments in the parent insulating compounds of high-Tc superconduc- tors. \textcopyright 1996 The American Physical Society.